is there a way to specify a static dev URL for AddNpmApp?

[sebastianwhiffen]

I am using the following for my node frontend:

builder.AddNpmApp("frontend", "../../app-frontend", builder.Environment.IsDevelopment() ? "dev" : "start") .WithReference(realtimerules_api) .WithServiceBinding(containerPort: 3000, scheme: "http", env: "PORT");

the current issue I am trying to solve is related to my authentication provider (Auth0)

they require a static callback address for login/logout ect...

issue being that when AddNpmApp creates the port lifecycle it is seemingly random each time. and so I cannot specify the correct development callback address

is there a way to make this localhost address the same each time?

or any reason why this is not the default functionality?

Thank you in advance for your responses <3

[davidfowl]

they require a static callback address for login/logout ect...

Specify a host port and pass that to the application.

builder.AddNpmApp("frontend", "../../app-frontend", builder.Environment.IsDevelopment() ? "dev" : "start")
.WithReference(realtimerules_api)
.WithServiceBinding(hostPort: 8085, containerPort: 3000, scheme: "http", env: "PORT");

Then you can hardcode 8085 in your auth configuration.

or any reason why this is not the default functionality?

You can read about how networking works here https://learn.microsoft.com/en-us/dotnet/aspire/fundamentals/networking-overview

[stevedunn-marex]

Fast forward to 2025, and I can't seem to find the WithServiceBinding method...?

[davidfowl]

WithHttpEndpoint.

The linked networking doc also has this